leaflet@1.5.1とd3@5.0.0を用いて、地図上にsvg circleを表示するサンプル
Last active
November 1, 2019 08:28
-
-
Save shimizu/2e54b3b17ae68a0befe60f6f3b6531a7 to your computer and use it in GitHub Desktop.
leaflet@1.5.1 & d3@5.0.0 - ポイント表示
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Leafletv1.5.1 + D3v5 point</title> | |
| <meta charset="utf-8" /> | |
| <!-- leafletのcssを読み込む --> | |
| <link rel="stylesheet" href="https://unpkg.com/leaflet@1.5.1/dist/leaflet.css" | |
| integrity="sha512-xwE/Az9zrjBIphAcBb3F6JVqxf46+CDLwfLMHloNu6KEQCAWi6HcDUbeOfBIptF7tcCzusKFjFw2yuvEpDL9wQ==" | |
| crossorigin="" /> | |
| <!-- leafletのスクリプトを読み込む--> | |
| <script src="https://unpkg.com/leaflet@1.5.1/dist/leaflet.js" | |
| integrity="sha512-GffPMF3RvMeYyc1LWMHtK8EbPv0iNZ8/oTtHPx9/cc2ILxQ+u905qIwdpULaqDkyBKgOaB57QTMg7ztg8Jm2Og==" | |
| crossorigin=""></script> | |
| <style> | |
| html, | |
| body, | |
| #map { | |
| width: 100%; | |
| height: 100%; | |
| margin: 0; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="map"></div> | |
| <!-- D3.js ver.5 を読み込む--> | |
| <script src='//unpkg.com/d3@5.0.0/dist/d3.min.js'></script> | |
| <script> | |
| //Leaflet初期設定 | |
| var map = L.map('map').setView([36.3219088, 139.0032936], 12); | |
| var mapLink = '<a target="_blank" href="http://portal.cyberjapan.jp/help/termsofuse.html">国土地理院 地理院地図 標準地図</a>'; | |
| //Leafletにsvgレイヤーを追加 | |
| L.svg().addTo(map); | |
| //Tile Map Serviceの指定 | |
| L.tileLayer('http://cyberjapandata.gsi.go.jp/xyz/std/{z}/{x}/{y}.png', { | |
| attribution: '© ' + mapLink + ' Contributors', | |
| maxZoom: 18 | |
| }).addTo(map); | |
| // svg要素を選択 | |
| var svg = d3.select('#map').select('svg'); | |
| //ポイントデータを読み込む | |
| d3.json('landprice.geojson').then(function (point) { | |
| //元データにLeafletのLatLngobjを追加 | |
| point.features.forEach(function (d) { | |
| d.LatLngObj = new L.LatLng(d.geometry.coordinates[1], d.geometry.coordinates[0]); | |
| }); | |
| //サークル要素を追加 | |
| var circle = svg | |
| .selectAll('circle') | |
| .data(point.features) | |
| .enter() | |
| .append('circle') | |
| .attr('stroke', 'black') | |
| .attr('stroke-width', 2) | |
| .attr('fill', 'red') | |
| .attr('fill-opacity', 0.7) | |
| .attr('r', 10); | |
| var update = function () { | |
| //サークル要素の位置をアップデートする | |
| console.log('update'); | |
| circle.attr('transform', function (d) { | |
| return ( | |
| 'translate(' + map.latLngToLayerPoint(d.LatLngObj).x + ',' + map.latLngToLayerPoint(d.LatLngObj).y + ')' | |
| ); | |
| }); | |
| }; | |
| map.on('moveend', update); | |
| update(); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment